Building GHC on Mac stops

[Kazu Yamamoto ( 山本和彦 )]

Hi Nicolas,

My guess is here: libraries/integer-gmp/configure generates "gmp.h".
Building mkGmpDerivedConstants starts in parallel.  Since "configure"
takes time, "mkGmpDerivedConstants" is build before "gmp.h" is
created.

How can we ensure that these two jobs are carried out sequentially?

--Kazu

> I never determined how to fix this. Here's the notes I developed:
> 
> tl;dr For some reason, it seems gmp.h is not recognized as a dependency of
> mkGmpDerivedConstants.o
> 
> HTH
> 
> -----
> 
> If I run
> 
> $ perl boot; ./configure; make -j4
> 
> I tend to see a build failure. Immediately running make -j4 again succeeds.
> 
> In the following snippet from the log,
> FILE=libraries/integer-gmp/mkGmpDerivedConstants/mkGmpDerivedConstants.c
> 
> {{{
> "/usr/bin/gcc"  -m64 -fno-stack-protector
>   -Ilibraries/integer-gmp/gmp
> -Ilibraries/integer-gmp/mkGmpDerivedConstants/dist
>   -c FILE -o
> libraries/integer-gmp/mkGmpDerivedConstants/dist/build/mkGmpDerivedConstants.o
> 
> FILE:15:17: error: gmp.h: No such file or directory
> FILE: In function ‘main’:
> FILE:68: error: ‘MP_INT’ undeclared (first use in this function)
> FILE:68: error: (Each undeclared identifier is reported only once
> FILE:68: error: for each function it appears in.)
> FILE:69: error: expected expression before ‘)’ token
> FILE:69: error: expected expression before ‘)’ token
> FILE:70: error: expected expression before ‘)’ token
> FILE:70: error: expected expression before ‘)’ token
> FILE:71: error: expected expression before ‘)’ token
> FILE:71: error: expected expression before ‘)’ token
> make[1]: ***
> [libraries/integer-gmp/mkGmpDerivedConstants/dist/build/mkGmpDerivedConstants.o]
> Error 1
> make[1]: *** Waiting for unfinished jobs....
> }}}
> 
> Some 1677 lines later, I see the line
> 
>> cp libraries/integer-gmp/gmp/gmpbuild/gmp.h libraries/integer-gmp/gmp/
> 
> Which is I suppose why make -j4 succeeds the second time around.
> 
> I also see
> 
>> libraries/integer-gmp/mkGmpDerivedConstants/ghc.mk:20:
> libraries/integer-gmp/mkGmpDerivedConstants/dist/build/.depend.c_asm: No
> such file or directory
> 
> many lines above.
> 
> On Mon, Aug 5, 2013 at 9:26 PM, Kazu Yamamoto <kazu at iij.ad.jp> wrote:
> 
>> Hi,
>>
>> I'm using GHC head (32bit) on Mac. Recently, building GHC head
>> stops:
>>
>> ----
>> % make maintainer-clean; perl boot; ./configure --prefix=/ghc-head; make
>> -j3
>> ranlib: file: .libs/libgmp.a(mp_clz_tab.o) has no symbols
>> ranlib: file: .libs/libgmp.a(obprintf.o) has no symbols
>> ranlib: file: .libs/libgmp.a(obvprintf.o) has no symbols
>> ranlib: file: .libs/libgmp.a(obprntffuns.o) has no symbols
>> ranlib: file: .libs/libgmp.a(repl-vsnprintf.o) has no symbols
>> libtool: link: rm -fr .libs/libgmp.lax
>> libtool: link: ( cd ".libs" && rm -f "libgmp.la" && cp -p "../libgmp.la" "
>> libgmp.la" )
>> cp libraries/integer-gmp/gmp/gmpbuild/gmp.h libraries/integer-gmp/gmp/
>> cp libraries/integer-gmp/gmp/gmpbuild/.libs/libgmp.a
>> libraries/integer-gmp/gmp/
>> inplace/bin/mkdirhier libraries/integer-gmp/gmp/objs
>> cd libraries/integer-gmp/gmp/objs && /usr/bin/ar x ../libgmp.a
>> ranlib libraries/integer-gmp/gmp/libgmp.a
>> ranlib: file: libraries/integer-gmp/gmp/libgmp.a(mp_clz_tab.o) has no
>> symbols
>> ranlib: file: libraries/integer-gmp/gmp/libgmp.a(obprintf.o) has no symbols
>> ranlib: file: libraries/integer-gmp/gmp/libgmp.a(obvprintf.o) has no
>> symbols
>> ranlib: file: libraries/integer-gmp/gmp/libgmp.a(obprntffuns.o) has no
>> symbols
>> ranlib: file: libraries/integer-gmp/gmp/libgmp.a(repl-vsnprintf.o) has no
>> symbols
>> make: *** [all] Error 2
>> %
>> ----
>>
>> One more "make -j3" finishes the building. I'm sure that this does not
>> happen before.
>>
>> Are there any guys who get this problem?
>>
>> --Kazu
>>
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